Hello Bill,
Glue the pieces together with fast drying glue (instant glue for
example).This kind of glue provide a very thin coat and rapid drying.
Saw your pieces until you’re done and then heat the piece up with a
torche.Do not bend over your piece,the fume smells awfull.
A little bit of sanding need to be done depending on what kind of
glue you are using.
Regards Pedro
Palonso@t-online.de
Bill,
An effective method is to use shellac to bond metal layers (two or
more) while saw piercing. Use a soft low temperature flame and melt
some shellac onto one piece of metal. Lay the second piece ontop and
gently warm until shellac melts. Allow to cool and away you go.
A couple of things you need to take care with: If you overheat the
shellac it will burn and not bond. Saw piercing generates heat due to
friction; if you are working on a very small piece the shellac may
soften and the metal layers may move.
When piercing is completed you can also file both pieces while
bonded. when you are happy with the shape, gently heat with a low temp
flame to separate.
There are two ways of removing the shellac residue: Continue heat to
near annealing temp of your metal, the shellac will burn, turn to ash
and vapourise. A slower process is to place your metal into methylated
spirits and dissolve. This is useful if you wish to avoid metal
oxidation.
Other posters have commented on the poor advice you received from
your instructor. I concur. Soft solder or as it is commonly known lead
solder is the jewellers worst enemy on precious metals. Sometimes we
do need to use it, but very rarely on precious metals if at all.
Costume jewellery (low melting and non precious) is commonly soldered
with soft solders.
Take care if you use super glues, don’t get it on your skin, you may
form attachments not to your liking. Avoid breathing the vapours. When
heating to separate metals toxic fumes are produced, nasty stuff!
Double sided tape can be helpful, although I have not used it. The
only inconvenience I could see is that some of your lemel
(filings/metal fragments) will stick to the tape. This could be a
nuisance when during metal recycling.
I hope this helps.
Graham Farr
Sydney Australia.
Hi Bill, Another way to do this is to use a piece of metal double the
lenghth of the design. Bend this in two and hammer the bend flat so
that the two sides are flush against each other. Mark your design and
cut from the open side, finishing on the side where the bend is. This
way you save time by not having to dissolve the glue. I hope this
makes sense.
All the best,
Don
AND hallmark is compromised!
I use super glue then burn it off